Genuine OEM HP LaserJet Enterprise 500 Color M551xh Toners

The M551xh's HP 507A black cartridge is standard-yield, while HP 507X black is high-yield. A mixed 507X/507A set puts the larger cartridge in black only; cyan, magenta, and yellow remain the same HP 507A cartridges.

Toner Buzz carries genuine HP 507A colors and both black options individually, plus all-507A and mixed 507X/507A four-color sets. Choose the black capacity that suits your printing. The CE254A collection unit catches unused toner and handles a separate maintenance need from a toner cartridge.